.tip{
    position: absolute;
    left: 200px;
    top: 200px;
    background: #666;
    color: white;
    font-size: 12px;
    padding: 3px 5px;
    border-radius: 2px;
    text-align: center;
    transition: all 0.3s;
    opacity: 0;
}
.tip .small{
    width: 0;
    height: 0;
    border: 5px solid #666;
    border-left: none;
    border-top-color: transparent;
    border-bottom-color: transparent;
    position: absolute;
    left: -5px;
    top: 5px;

}